Improvement in machine for bending metal tube-skelps



teniet sans s'rnrnnn P. M. "msnen, or rHiLADnLPHIA, PENNsYLV'aNn-i,

Letters Patent No. 111,017, dated January 17, 1871.

'IMPROVEMENT lN MACHINE FOR BENDING METAL TUBE-SKELPS.

The Scheule referred .to in these Letters Patent and making part of the same.

I, .STEPHEN 1. Tasman, of the city of Philadelphia and State oi'Pennsylvania, have invented cer-` tain Inlprovcmcnts in Machines for Bending Metal Tube-Skelps, of which the following is a speciiication.

.The nature ot' my invention consists in so constructing and arranging one or more sheet-metal bendingrolls with tlanges, that they are caused to overlap the other rolls in such a manner as to guide the skclps in their passage thrrogh the machine, thus dispensing with the ordinary special guides.

'lo enable others skilled in the art to which my in1- provelnent appertains to make and use my machine,

1 will now give a detailed description thereof'.

'1n the accompanying drawing which makes a part of this speeiiication-- Figure-1 is a plan view of the improved machine. Figure 2 is a longitudinal section onthe line :t x of tiff. 1.

cFigure 3 is a cross-section through the rollers K K at the line y y' of figs'. 1 and 2.

Like lettersl in all. the gures indicate the same parts.

A is the bedfplate, and B B are the housings with which the other parts of the machine are connected.

On the shaft 1 there is a bending-roll, K, which has an annular groove, a, in its periphery.

l'he rolll, on the shaft 1', is of counter-form, and of such size that the space a is formed between the two rolls equal to the thickness of the skelp passing throughthis pair of rolls, in which the middle portion l) is brought to a 'half circle as it passes to the rolls L L on the 'shafts 2 2', and, in its passage through them, is brought into the forni of threefourths of a circle, there being an unbent portion, d, to be bent down, to complete the bending process, by another pair of rolls not shown in the drawing.

The above-mentioned rolls K K and L L', I have i'ully described in my specification of another' machine fully represented; l therefore deem a further descript-ion unnecessary here.

The main eature of this machine embraces the mode ot' guiding the skelp through the rolls, and, as,

above brieliy stated, consists of ilanges e e on the roll L', so constructed and arranged as to overlap the other rolls, as secu -in iigs. 1 and 2, and more `fully in tig. 3. r1`hc said iig. 3 is a cross-section through the rolls L L at the line y y of figs. l and 2, looking on the first bending-rolls K K.

lt will be'scen, as above stated, that the flanges e c lap over all the other rolls, so as to vbe a guido to the skelp during its passage through all the rolls.

A similarl construction ot' a roll having broad flanges,

c, will apply to a train of rolls for bending sheets of metal for other purposes.

What l. claim as my invention, and desire to sccure by Letters Patent, is-

The construction of' one or more of the bendingrolls, with langes c, and combining said roll or rolls with the other parts of the machine in such amanner that said flanges shall overlap the contiguous rolls, substantially as represented, so as to guide the sheet ot' metal as it passes through the machine, as above set forth.

In testimony that the above is' my invention I have hereunto set my hand and affixed my seal this'14th day ot' November, 1870.

STEPHEN P. M. TASKER. [n s] Vitnesses: l

STEPHEN UslreK, THOMAS J. BEWLEY. 

